2003•Energy Saving of Non-Ferrous MetallurgyRequires access

Appliacation of spiral-finned tubes economizer in the improvement of boiler energy saving technical reconstruction

Xin Peng

Abstract

According as slaggling and low thermal efficiency caused by high temperature of outlet flue in the thermal plant's boiler, the paper analyze the cause and bring forward a new method to use spiral finned tubes in the improvement of boiler economizer, which is based upon result of synthesis test for the boiler and thermodynamic calculation. The design results for the boiler economizer are showed. The operating state after retrofit indicate that the temperature of outlet flue has been reduced by 40℃, thermal efficiency has been increased by 2 27 percent point and slaggling has been avoid. Retrofit effect is remarkable.

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Key concepts: Economizer, Boiler (water heating), Flue gas, Flue, Thermal, Engineering, Nuclear engineering, Mechanical engineering